Flat-tire alarm



L.' HOFMExsTEH.

' FLAT URE ALARM.

APPLICAUON FILED 0CT.1B. 1918.

1,333,076. i Patented Mar. 9,1920.

@EZ-61214736555 l CJi "Warren @aerea LEG HOFMEISTEE, 0F MIL'WAUXEE, WTCSUNSN.

FLAT-Tian ALARM.

Application led October i3 lie il; known that Il, Lito llomi'ni's'rnu, a citizen or' .the lllniled Stales, and reeiilent of Milwaukee, iu'the county of lllilwaukee and Stale oi llfiseonein, have invented new and useful 'Improvements in Flat-Tire Alarms, oi which the following' is a description, ref'n erence being had to the accompanying drawings, whirh are a parl; oll this speeieation.

The invention relates to anion'iobile tires and more particularly to a device which `will imlieaie fo the (iriver of the autoniebile thai ehe 'tire is leaking or becoming' (leliatecl auil is fully described anilennlained in the speci .lieaiiion and shown in `he aeconiinligy'in,if drawings in which: f

- li`igure l is` a, verieal sectional View llu'mig'h a tire equipped with the ileviee einlsoilying the invention; and` a e 4ln lire lra\.visi`,;.-:,` the numeral 2 designates the lelly, z ilie wheel rim, ,l the outer. Casing, 5 lhe inner lube :nul Ii ihevalie having a v l'lireaileil mul? anil an annular flange 7'.

A Spherieaily' convex block -l of rubber or otberjvieliling niaerial ,novide wili a eenM irai aperure Si is alixerl lo the bbreufleil enel. T of the valve by umana oi" a wing; nul i0 euibeilileil in said bloei-1 anil having lits ihreaileil bore il Seoul-eil upon elle end I of -aaiil valve, the aperiure 'Si being in line with the valve tulle. 'lhe valve l earries anni; i2 unil if; secured to the tube by clamping; the. tube 5 adjacent to l'lie stein bei-,Ween the flange T and ihe nul l', a \\'ai;hen\'"l3 being interposed between 'die nut l2 and the tube lVith this construction ilu, inner lube is blown up in the usual manner, the air pass*- ing' through the valve Siem anil aperture l) into the tube. Ti vi'or any reason Lilie Valve 0r lube Slioulil'leali the partial ileiaiiionoi'i the tire will cause it io Sriko, ille luiniii or bloei; 8 as it turna areuucl auil ibis: continuecl bumping will lie netieeii ami beard by the Speeieao sf Letters Patent.

Joperator of bhe vehicle wno is thereby warned of the,co1dition of the tire so that he may blow it up or repair ii/before' Seri- 'Ous damage .is done to the tiregby ricling,

- upon it. In brief the rubber lbump serve-La asa silent Sentinel to warn the operator of' fthe flattened condition of the lire, and (loes Patenieil Malta, 19263. 4

,wie serial no aam.

not interfere with the normal operation of i'he lire. l i

The block S inay be attached to any point on v`the inner side of the inner tube but il' prefer te attach it to the tube by the same' ariane euiployml to secure the valve tothe lube aa il; is more convenient and aa a goed Support is in'ovided.

ll/Viral, Lelaini aa my invention ie:

l. A device oi' the class described eomprisingv a yalve stein, a valve stem Securing nut, and a bumper bloelcrigidly securedto said valve stem Securing' nu.; eaicl bumper block 'Forming a bump on a tire when ifhe tire partially rlelali'ed. y

ln a `pneumatic flat tire alarm, an inner tube. an infiating valve therefor including a lhreaileil end passed inte the .interior of eaifl tube, a winged nu?J engaging the threadeii .end ef `said valve flispo'sefiin the tube im.

secure the 'valve thereto, and a rubber bumping block disposed in saiel tube and'severingv `Said winged nut and the portieri ai me valve disposed in the tube, Saul .bumping ble'elrbe" ing rigiclly secured to saiel Winged. nulla.

i 9i. ln an automobile,tit-e, the. eombinafzieny with an inner tube and its inflating valve projecting {hei-ein', of means for inficatifag' he inlatiun of said 'tube consisting; of' a.

rubber bloei; sari-oandingtiie'iporiien (if Said 'valve proje'eting'in said tube, ene-air in-lei; passageway in said block and registering* with the passageway Of saiclKA valve, ani means 'forl securing said valve to 4the tube,

eaiil means being' eiubetliled in Sail block te :amue the saine in thetulie. 'l

lu testimony whereof 'l affix my aiguainre.v

Luo iierianis'rne. 

